Rectangular water bath is used for sample pre-treatment and all thermostatic tests. It is suitable for evaporating liquids like alcohol or for melting solids such as agar. Its double walled chambers made of stainless steel and outer wall made of thick mild steel finished with epoxy based powder coated paint. The double wall chamber is filled with high grade insulation to prevent heat loss. This is provided with 1500 watts heating device, controlled by capillary type thermostat from ambient to 110°C.